diff core/modules/layout_builder/src/Controller/AjaxHelperTrait.php @ 14:1fec387a4317

Update Drupal core to 8.5.2 via Composer

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/modules/layout_builder/src/Controller/AjaxHelperTrait.php	Mon Apr 23 09:46:53 2018 +0100
@@ -0,0 +1,41 @@
+<?php
+
+namespace Drupal\layout_builder\Controller;
+
+use Drupal\Core\EventSubscriber\MainContentViewSubscriber;
+
+/**
+ * Provides a helper to determine if the current request is via AJAX.
+ *
+ * @internal
+ *
+ * @todo Move to \Drupal\Core in https://www.drupal.org/node/2896535.
+ */
+trait AjaxHelperTrait {
+
+  /**
+   * Determines if the current request is via AJAX.
+   *
+   * @return bool
+   *   TRUE if the current request is via AJAX, FALSE otherwise.
+   */
+  protected function isAjax() {
+    return in_array($this->getRequestWrapperFormat(), [
+      'drupal_ajax',
+      'drupal_dialog',
+      'drupal_dialog.off_canvas',
+      'drupal_modal',
+    ]);
+  }
+
+  /**
+   * Gets the wrapper format of the current request.
+   *
+   * @string
+   *   The wrapper format.
+   */
+  protected function getRequestWrapperFormat() {
+    return \Drupal::request()->get(MainContentViewSubscriber::WRAPPER_FORMAT);
+  }
+
+}